How can I turn off the main screen of the info system, perhaps to just display the time? I have read the manuals and searched the internet and cannot find the solution. Sometimes I just want a blank screen!
Thanks in advance.

That's the only way I've found to (almost) turn the screen off. Radio etc can still be played if you want. If you don't then mute it before turning off the screen. If off, you can still press radio button etc and after a few seconds of inactivity the screen turns off again.